Sealing Module of a Vacuum Packing Machine

ABSTRACT

A sealing module of a vacuum packing machine includes a base, a sealing bar, an air bag, and two guide posts. The sealing bar is mounted on the guide posts which are secured on the base. The sealing bar has a bottom provided with a substantially inverted T-shaped mounting groove. The air bag is mounted in the mounting groove. The mounting groove has two opposite sides each provided with an arcuate positioning recess. Thus, the sealing bar is located between the guide posts by the mounting groove and the arcuate positioning recess, so that the sealing bar is locked onto and detached from the base easily and quickly. In addition, the sealing bar can be detached from the guide posts easily and quickly, so that the sealing module is disassembled quickly and can be cleaned easily.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a vacuum packing machine and, more particularly, to a sealing module of a vacuum packing machine.

2. Description of the Related Art

A conventional sealing module 1 of a vacuum packing machine in accordance with the prior art shown in FIG. 1 comprises a base 11, a plurality of support blocks 12 mounted on the base 11 by screwing, a mounting bracket 14 mounted on the support blocks 12, a cover 16 mounted on the mounting bracket 14, an air bag 15 mounted between the mounting bracket 14 and the cover 16, and a sealing bar 17 movably mounted on the mounting bracket 14 and located above the cover 16. One of the support blocks 12 is provided with an air outlet hole 120, and an O-ring 13 is mounted in the air outlet hole 120 of one of the support blocks 12 to provide an air-tight function. The air bag 15 is provided with an air inlet hole 150 which is connected to a connecting tube 18. The mounting bracket 14 is provided with a connecting hole 140. The connecting tube 18 is extended through the connecting hole 140 of the mounting bracket 14, the O-ring 13 and the air outlet hole 120 of one of the support blocks 12, so that the connecting tube 18 connects the air outlet hole 120 of one of the support blocks 12, the connecting hole 140 of the mounting bracket 14 and the air inlet hole 150 of the air bag 15. When in use, air is filled through the air outlet hole 120 of one of the support blocks 12, the connecting tube 18 and the connecting hole 140 of the mounting bracket 14 into the air inlet hole 150 of the air bag 15, so that the air bag 15 is filled with air and is inflated and expanded upward to push the cover 16 which is moved upward push the sealing bar 17. Thus, the sealing bar 17 is lifted to abut a sealing strip located above the sealing bar 17 so as to press and seal a packaging bag. However, the conventional sealing module 1 has many parts so that the conventional sealing module 1 has a higher cost of fabrication. In addition, the conventional sealing module 1 has a complicated construction so that the conventional sealing module 1 is not assembled and disassembled easily and quickly. Further, the conventional sealing module 1 has many parts which produce dead corners and clearances so that dirt and dust are easily accumulated in the parts of the conventional sealing module 1, thereby wearing or breaking the parts of the conventional sealing module 1, and thereby decreasing the lifetime of the conventional sealing module 1. Further, the conventional sealing module 1 has many parts so that the conventional sealing module 1 cannot be cleaned easily and conveniently, thereby causing inconvenience in maintenance of the conventional sealing module 1. Further, the conventional sealing module 1 has many parts so that the conventional sealing module 1 is easy to fail when one of the parts is inoperative, thereby decreasing the working efficiency of the conventional sealing module 1. Further, the conventional sealing module 1 is easy to fail when one of the parts is inoperative, thereby decreasing the packaging speed and quality, so that the conventional sealing module 1 cannot efficiently satisfy the practical working requirement of the operator.

BRIEF SUMMARY OF THE INVENTION

In accordance with the present invention, there is provided a sealing module of a vacuum packing machine, comprising a base, a sealing bar, an air bag, and two guide posts. The sealing bar has an elongate shape and has a substantially inverted T-shaped body. The sealing bar has two opposite ends mounted on the guide posts respectively. The guide posts are respectively secured on two opposite sides of the base. The sealing bar has a bottom provided with a substantially inverted T-shaped mounting groove. The air bag is mounted in a lower portion of the mounting groove of the sealing bar. The mounting groove of the sealing bar has two opposite sides each provided with an arcuate positioning recess.

According to the primary advantage of the present invention, the sealing bar is located between the guide posts by guidance of the mounting groove and by positioning of the arcuate positioning recess, so that the sealing bar is locked onto and detached from the base easily and quickly.

According to another advantage of the present invention, the sealing bar can be detached from the guide posts easily and quickly, without aid of any hand tool, so that the sealing module is disassembled quickly and can be cleaned easily.

According to a further advantage of the present invention, the sealing module has few parts so that the sealing module is not easy to fail, thereby satisfying the working requirement of the operator.

According to a further advantage of the present invention, the sealing module has a simplified construction without having many parts so that the sealing module has a lower cost of fabrication to provide an economic benefit to the consumer.

According to a further advantage of the present invention, the sealing module has few parts and has a flat and even surface without clearance and dead corner, so that dust or dirt will not be accumulated in the parts of the sealing module, thereby facilitating maintenance and enhancing the lifetime of the sealing module.

Further benefits and advantages of the present invention will become apparent after a careful reading of the detailed description with appropriate reference to the accompanying drawings.

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWING(S)

FIG. 1 is an exploded perspective view of a conventional sealing module of a vacuum packing machine in accordance with the prior art.

FIG. 2 is an exploded perspective view of a sealing module of a vacuum packing machine in accordance with the preferred embodiment of the present invention.

FIG. 3 is a perspective assembly view of the sealing module of a vacuum packing machine as shown in FIG. 2.

FIG. 4 is a perspective view showing the assembling process of the sealing module of a vacuum packing machine as shown in FIG. 2.

FIG. 5 is a locally enlarged view of the sealing module of a vacuum packing machine as shown in FIG. 4.

DETAILED DESCRIPTION OF THE INVENTION

Referring to the drawings and initially to FIGS. 2 and 3, a sealing module 2 of a vacuum packing machine in accordance with the preferred embodiment of the present invention comprises a base 20, a sealing bar 21, an air bag 22, and two guide posts 23. The sealing bar 21 has an elongate shape and has a substantially inverted T-shaped body. The sealing bar 21 has two opposite ends mounted on the guide posts 23 respectively. The sealing bar 21 has a bottom provided with a substantially inverted T-shaped mounting groove 210 for mounting the air bag 22. The mounting groove 210 of the sealing bar 21 has two opposite sides each provided with an arcuate positioning recess 211 for mounting a respective one of the guide posts 23. The guide posts 23 are respectively secured on two opposite sides of the base 20. Preferably, the guide posts 23 are screwed onto the base 20 respectively to fix the sealing bar 21 on the base 20. The air bag 22 is mounted in a lower portion of the mounting groove 210 of the sealing bar 21. The air bag 22 has a central portion provided with an air guide hole 220. The air guide hole 220 of the air bag 22 is connected to an air pipe 221 so that air is filled through the air pipe 221 into the air bag 22. An O-ring 24 is mounted on the air pipe 221 to provide an air-tight function so as to prevent the air from being leaked outward.

In assembly, the guide posts 23 are secured on the top of the base 20 respectively. Then, the air bag 22 is placed in the mounting groove 210 of the sealing bar 21. Finally, the two opposite ends of the sealing bar 21 are mounted on the guide posts 23 respectively. At this time, the arcuate positioning recess 211 of the mounting groove 210 of the sealing bar 21 are mounted on the respective guide post 23 to position the sealing bar 21 on the guide posts 23 so that the sealing bar 21 is secured on the base 20. In such a manner, the air pipe 221 is extended through an air hole 201 of the base 20 and is connected to the air guide hole 220 of the air bag 22 so that the air is filled through the air pipe 221 into the air bag 22. When in use, the air is filled through the air pipe 221 into the air bag 22 so that the air bag 22 is filled with air and is inflated and expanded upward to push the sealing bar 21 upward. Thus, the sealing bar 21 is lifted to abut a sealing strip located above the sealing bar 21 so as to press and seal a packaging bag so that the packaging bag is clamped between the sealing bar 21 and the sealing strip. Then, the sealing module 2 is heated so that the packaging bag is heated to proceed a sealing and packaging process. In addition, the O-ring 24 is mounted on the air pipe 221 to provide an air-tight function so as to prevent the air from being leaked outward from the air pipe 221. Thus, the sealing module 2 has a simplified construction without having many parts so that the sealing module 2 is assembled easily and quickly. In addition, the sealing module 2 is disassembled quickly so that the sealing module 2 can be cleaned easily. Further, the sealing module 2 has few parts so that the sealing module 2 is not easy to fail, thereby enhancing the quality and working efficiency of the sealing module 2.

Referring to FIGS. 4 and 5 with reference to FIGS. 2 and 3, the length of the sealing bar 21 corresponds to the distance between the guide posts 23 so that the two opposite ends of the sealing bar 21 are mounted on the guide posts 23 respectively by guidance of the mounting groove 210 at each of the two opposite ends of the sealing bar 21. The sealing bar 21 is initially disposed at an inclines state, with the mounting groove 210 of the sealing bar 21 being mounted on one of the guide posts 23. Then, one of the two opposite ends of the sealing bar 21 is pushed toward one of the guide posts 23 as shown in FIG. 4 so that the arcuate positioning recess 211 of one of the two opposite ends of the sealing bar 21 abuts the respective guide post 23 as shown in FIG. 5. Then, the other one of the two opposite ends of the sealing bar 21 is mounted on the other one of the guide posts 23 as shown in FIG. 4, with the arcuate positioning recess 211 of the other one of the two opposite ends of the sealing bar 21 abutting the respective guide post 23, so that each of the guide posts 23 is received in the mounting groove 210 of the sealing bar 21 and is locked in the respective arcuate positioning recess 211 of the sealing bar 21. Thus, the sealing bar 21 is located between the guide posts 23 and cannot be displaced any more. On the contrary, when the user wishes to replace the sealing bar 21, one of the two opposite ends of the sealing bar 21 is pushed toward one of the guide posts 23. Then, the other one of the two opposite ends of the sealing bar 21 is lifted to detach from the other one of the guide posts 23 so that the sealing bar 21 is disposed at an inclines state. Thus, the sealing bar 21 can be detached from the guide posts 23 easily and quickly, without aid of any hand tool.

Accordingly, the sealing bar 21 is located between the guide posts 23 by guidance of the mounting groove 210 and by positioning of the arcuate positioning recess 211, so that the sealing bar 21 is locked onto and detached from the base 20 easily and quickly. In addition, the sealing bar 21 can be detached from the guide posts 23 easily and quickly, without aid of any hand tool, so that the sealing module 2 is disassembled quickly and can be cleaned easily. Further, the sealing module 2 has few parts so that the sealing module 2 is not easy to fail, thereby satisfying the working requirement of the operator. Further, the sealing module 2 has a simplified construction without having many parts so that the sealing module 2 has a lower cost of fabrication to provide an economic benefit to the consumer. Further, the sealing module 2 has few parts and has a flat and even surface without clearance and dead corner, so that dust or dirt will not be accumulated in the parts of the sealing module 2, thereby facilitating maintenance and enhancing the lifetime of the sealing module 2.

Although the invention has been explained in relation to its preferred embodiment(s) as mentioned above, it is to be understood that many other possible modifications and variations can be made without departing from the scope of the present invention. It is, therefore, contemplated that the appended claim or claims will cover such modifications and variations that fall within the true scope of the invention. 

1. A sealing module of a vacuum packing machine, comprising: a base, a sealing bar, an air bag, and two guide posts, wherein: the sealing bar has an elongate shape and has a substantially inverted T-shaped body; the sealing bar has two opposite ends mounted on the guide posts respectively; the guide posts are respectively secured on two opposite sides of the base; the sealing bar has a bottom provided with a substantially inverted T-shaped mounting groove; and the air bag is mounted in a lower portion of the mounting groove of the sealing bar.
 2. The sealing module of a vacuum packing machine of claim 1, wherein the mounting groove of the sealing bar has two opposite sides each provided with an arcuate positioning recess. 